February 26 , 2017. EN. Fuego , Kilauea , Piton de la Fournaise , Popocatepetl .

Home / blog georges Vitton / February 26 , 2017. EN. Fuego , Kilauea , Piton de la Fournaise , Popocatepetl .

February 26 , 2017. EN. Fuego , Kilauea , Piton de la Fournaise , Popocatepetl .

February 26 , 2017.

 

Fuego , Guatemala :

Activity type: Vulcanian
Morphology: Stratovolcan composite
Geographical location: 14 ° 28 ’54˝ Latitude N; 90 ° 52 ’54˝ Longitude W.
Altitude: 3,763msnm.

The second eruption of the Fuego volcano continues with moderate to strong explosions, generating ash plumes that reach a height of between 4,500 and 5,000 meters (14,763 and 16,404 feet), which have traveled about 20 kilometers North-West, North, Northeast and East. Falling of ash is reported in communities such as El Rodeo, El Zapote, Reunion, Alotenango, San Vicente Pacaya, and it is possible that, depending on wind changes, they will reach the city of Guatemala in the next few hours.


Currently, three lava flows are reported: one in Santa Teresa with an approximate length of 1,200 meters, the second in Ceniza with a length of 1,600 meters and the third in Las Lajas reaching a length of 1,300 meters. These flows are fed by lava fountains that have reached 300 meters above the crater, generating constant heavy avalanches on the outline of the crater.
Eruptive behavior continues to present the possibility of generation of pyroclastic flows so it is recommended to be attentive to the evolution of the eruption and not to remain in the ravines and the neighboring regions.

Source : Insivumeh

Photos : AFP ,  Dr R. Roscoe.

 

Kilauea , Hawai :

19°25’16 » N 155°17’13 » W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary:
Kilauea Volcano continues to erupt at its summit and at the Pu’u ‘O’o vent on its East Rift Zone. The episode 61g lava flow from Pu’u ‘O’o is entering the ocean at Kamokuna and is feeding surface flows on the pali and the coastal plain, inland from the ocean entry. These lava flows pose no threat to nearby communities at this time. There was inflation at the summit, and the lava lake surface was about 18.5 m (~61 ft.) below the floor of Halema’uma’u Crater this morning.

 

L’image contient peut-être : nuage, ciel, montagne, plein air et nature

Summit Observations:
Tiltmeters at Kilauea’s summit recorded gradual inflationary tilt over the past day, breaking the string of DI events that have occurred, one after the other, over the past few weeks. The lava lake surface shows little change in level, so it remains roughly 18.5 m (~61 ft.) below the rim of the Overlook vent (i.e., the floor of Halema’uma’u Crater). Webcam views of the lava lake can be found at this webpage: http://hvo.wr.usgs.gov/cams/region_kism.php. Seismicity is within normal, background rates, with several small earthquakes occurring across the volcano, but mostly in the summit area. Summit tremor continues to fluctuate in response to variations in lava lake spattering. Average daily summit sulfur dioxide emission rates ranged from about 1,800 to 2,600 metric tons/day for the few days over the past week when conditions permitted measurements.

Pu’u ‘O’o Observations:
Webcam images over the past 24 hours show persistent glow at long-term sources within the crater and from a vent high on the northeast flank of the cone. There were no significant changes in East Rift Zone seismicity over the past 24 hours, and the tiltmeter at Pu’u ‘O’o recorded no significant change in tilt. The sulfur dioxide emission rate from all East Rift Zone vents was about 200 metric tons/day when last measured on February 16, 2017.

Lava Flow Observations:
The episode 61g flow is still active and entering the ocean at Kamokuna. It also hosts weak surface breakouts on the coastal plain less than 1 km (~0.6 mi) upslope from the FEMA emergency road. Other surface flows were active on the pali farther inland. None of these flows pose a threat to nearby communities at this time.

 

Source : HVO

Photos : David Ford , Bruce Omori .

 

Piton de la Fournaise , La Réunion :

The eruption begun on January 31, 2017 at 7:40 pm local time continues. Since last night, the volcanic tremor (indicator of surface eruptive intensity) re-increases progressively (Figure 1).

(OVPF/IPGP)

Figure 1: Evolution of the RSAM (volcanic tremor and eruption intensity indicator) between January 31st and February 25th (16h30 local time) on the seismic station of Château Fort, located on the southern flank of the volcano.

– No seismicity was recorded during the day under the summit of Piton de la Fournaise.

– The inflation of the volcano in its summit area continues. A slight inflation at the base of the cone (bottom of the Enclos ) is now perceptible. On the other hand, outside the Enclos , no deformation is currently observable.

 

No direct visual observation was made by observatory teams today. The evolution of surface activity has been in a slight increase since yesterday, in accordance with the evolution of the eruptive tremor.

Source : OVPF

Photo : Drone copter

 

 

Popocatepetl , Mexico :

25 February 11h00 (1700 GMT 25 February)

Over the past 24 hours, through the seismic recordings of the Popocatepetl volcano monitoring system, 244 low-intensity exhalations accompanied by water vapor and gases, as well as an explosion, today at 07: 51 h, reaching a height of 1 km above the crater were identified. In addition, a volcano-tectonic earthquake was recorded yesterday at 21:06 h with a preliminary magnitude of M 1.2 and two today at 05: 08h and 09.55 h, with preliminary magnitudes of M1.6 and M1.9, respectively.

 

All night long a glimmer could be seen above the crater.
At the time of this report, a continuous emission of steam and gas to the south-east is observed.
CENAPRED asked not to approach the volcano and in particular the crater.

The volcanic alert semaphore of Popocatepetl volcano is located in Amarillo Phase 2.

 

Source : Cenapred .

Photo : Fabian GR

Recommended Posts

Leave a Comment

Nous contacter

Nous ne sommes pas disponibles pour le moment. Mais vous pouvez nous envoyer un email a l'aide du formulaire ci-dessous.

Not readable? Change text. captcha txt

Start typing and press Enter to search